New energy automobile battery box compression resistance detection device
By employing a bottom-up pressure detection method and real-time adjustment of the electrolyte collection hood, the problem of electrolyte leakage in traditional devices has been solved, achieving comprehensive electrolyte collection and improved safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- SHANDONG INST FOR PROD QUALITY INSPECTION
- Filing Date
- 2026-03-05
- Publication Date
- 2026-05-19
AI Technical Summary
Traditional pressure testing devices are prone to electrolyte leakage when simulating pressure on the bottom of a car battery box, posing a safety hazard. Furthermore, the electrolyte collection mechanism is not adjustable and cannot effectively prevent electrolyte corrosion of the device.
The detection method employs bottom-up pressure application, combined with a conical electrolyte collection hood and coverage adjustment mechanism, to monitor pressure changes and rupture range in real time. The electrolyte collection hood and flow channel enable comprehensive collection of electrolyte and prevention of leakage.
It effectively prevents electrolyte leakage, reduces safety hazards, decreases maintenance frequency and cost, and improves detection efficiency and safety.
Smart Images
Figure CN122062969A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of new energy vehicle battery box testing technology, and in particular to a new energy vehicle battery box pressure resistance testing device. Background Technology
[0002] A search revealed that patent CN120702873A discloses a pressure resistance testing device for a new energy vehicle battery box. The device includes a battery box body, a bottom testing mechanism located outside the battery box body, a top pressurizing mechanism located directly above the bottom testing mechanism, a control mechanism mounted on the bottom testing mechanism, and a resonance detection mechanism located inside the bottom testing mechanism. By using the bottom testing mechanism and the top pressurizing mechanism as the simulated vehicle chassis, and fixing the battery box body within the port of the bottom testing mechanism, the resonance detection mechanism can test the actual pressure resistance of the battery box body in a simulated sealed environment after the top pressurizing mechanism and the bottom testing mechanism close, and the battery box body separates the internal cavity of the closed device. Simultaneously, by adjusting the vibration frequency of the resonance detection mechanism, the device simulates the bumpy conditions experienced by the vehicle, thereby simulating the actual pressure resistance of the battery box during vehicle operation. Traditional pressure testing devices have the following problems: Because they are generally open-designed, when simulating pressure on the bottom of a car battery box, the battery box may rupture, causing electrolyte leakage and corrosion of the device, posing a safety hazard. Frequent cleaning of leaked material is also required, making operation cumbersome. To address this issue, existing pressure testing devices typically include an electrolyte collection mechanism. However, the size of the collection surface of this mechanism cannot be adjusted. Furthermore, car battery box ruptures are usually complete, spreading from the center of the testing surface outwards. The rupture may occur at the edge of the testing surface, not at the exact center, and may extend beyond the boundary of the electrolyte collection mechanism, leading to electrolyte leakage. Summary of the Invention
[0003] The purpose of this invention is to provide a pressure testing device for new energy vehicle battery boxes. During the testing process, the device can fully cover the testing surface of the vehicle battery box, and the coverage end can be adjusted in real time according to the rupture range of the battery box. This allows for the immediate collection of leaked electrolyte after the battery box is ruptured under pressure, effectively preventing electrolyte leakage, reducing the risk of testing personnel coming into contact with electrolyte, and preventing electrolyte corrosion of the device.
[0004] The present invention is achieved through the following technical solution: The present invention discloses a pressure resistance testing device for a new energy vehicle battery box, including a testing platform for supporting the vehicle battery box and a testing port provided through the top of the testing platform. The testing platform has a cavity inside, and the top of the cavity is connected to the testing port. The cavity is equipped with a pressure testing component for pressure testing of the bottom of the car battery box; The pressure resistance testing component has a mounting bracket on its outer side, and a conical electrolyte collection cover that covers the testing surface of the car battery box on its inner side. The top of the electrolyte collection cover is open and the top of the electrolyte collection cover is flush with the top of the testing port. The testing end of the pressure resistance testing component passes through the bottom of the electrolyte collection cover and is located inside the electrolyte collection cover. The lower part of the electrolyte collection hood is connected to a guide channel that can guide the electrolyte inside the electrolyte collection hood to the outside of the detection platform. The outer side of the electrolyte collection hood is provided with a coverage adjustment mechanism that can adjust the upper diameter of the electrolyte collection hood. The top of the testing platform is equipped with a fixing component that can clamp and fix the car battery box.
[0005] Furthermore, the pressure resistance testing component includes a first electric push rod vertically disposed inside the cavity. The output end of the first electric push rod passes through the bottom of the electrolyte collection cover and slides vertically with the electrolyte collection cover. The output end of the first electric push rod is provided with a testing head that can apply pressure to the bottom of the car battery box for pressure resistance testing.
[0006] Furthermore, the sliding connection between the first electric push rod and the bottom of the electrolyte collection cover is provided with a folded sealing cloth that can seal the sliding joint between the first electric push rod and the electrolyte collection cover. The output end surface of the first electric push rod and the surface of the detection pressure head are both coated with an anti-corrosion coating.
[0007] Furthermore, the bottom of the electrolyte collection hood is inclined, the flow channel is inclined, the end of the flow channel near the electrolyte collection hood is higher than the end of the flow channel away from the electrolyte collection hood, and the higher end of the flow channel is connected to the lower end of the bottom of the electrolyte collection hood. The lower end of the flow channel passes through the side of the mounting frame and the test table and is located outside the test table.
[0008] Furthermore, the upper part of the electrolyte collection cover is made of elastic silicone, the lower part of the electrolyte collection cover is made of engineering plastic, and the inner wall of the electrolyte collection cover is coated with an anti-corrosion coating.
[0009] Furthermore, the coverage adjustment mechanism includes a drive ring rotatably mounted on the top of the mounting frame. The outer side of the drive ring is circular and has several arc-shaped drive grooves evenly distributed. A control ring is located directly above the drive plate. The top of the control ring is connected to the inner top of the detection table. The bottom of the control ring has several sliding grooves that correspond one-to-one with the positions of the arc-shaped drive grooves. A first sliding block is slidably connected to each sliding groove.
[0010] Furthermore, the bottom of each of the first sliding blocks is slidably connected to an arc-shaped drive groove, the side end of each of the first sliding blocks is connected to the side end of the upper part of the electrolyte collection cover, and a second electric push rod is horizontally provided on the inner top of the detection stage. The tail end of the second electric push rod is connected to the inner wall of the detection stage, and the output end of the second electric push rod is connected to one side of the drive disk.
[0011] Furthermore, it also includes a control system located inside the electrolyte collection hood. The control system includes a controller, a pressure sensor, a camera, and a drive control module. The pressure sensor is located on one side of the detection end of the pressure head. The controller, drive control module, and camera are located inside the electrolyte collection hood. The pressure sensor and drive control module are electrically connected to the controller, and the camera is communicatively connected to the controller.
[0012] Furthermore, the fixing assembly includes two third electric push rods symmetrically and horizontally arranged on both sides of the detection port, and two fourth electric push rods symmetrically and horizontally arranged on the other two sides of the detection port. The output ends of the two third electric push rods are provided with second sliding blocks, and first fixing blocks are slidably connected to the second sliding blocks in the horizontal direction. The output ends of the two fourth electric push rods are provided with third sliding blocks, and second fixing blocks are slidably connected to the third sliding blocks in the horizontal direction.
[0013] Furthermore, each of the two first fixing blocks has a first fixing groove on one side adjacent to the other, which can limit the upper part and top surface of the car battery box and fits the shape. Each of the two second fixing blocks has a second fixing groove on one side adjacent to the other, which can limit the middle and both sides of the car battery box and fits the shape.
[0014] Compared with the prior art, the present invention has the following beneficial effects: This invention employs a bottom-up pressure-applying detection method to the bottom of the car battery box, which differs from traditional detection methods. When the battery box breaks, the electrolyte will flow downwards under gravity because the break is at the bottom of the battery box, preventing it from adhering to the surface of the battery box. Furthermore, with the electrolyte collection cover covering the detection surface, the electrolyte can be collected by the electrolyte collection cover covering the detection surface in the first instance.
[0015] This invention's pressure sensor can monitor the pressure data of a car battery box in real time. If the car battery box ruptures due to pressure, the pressure value of the pressure sensor drops sharply. Under the monitoring of a camera, the rupture range of the bottom detection surface of the car battery box can be determined in a timely manner. Based on the pressure change signal and rupture range information, the controller outputs control commands to the drive control module. The drive control module controls the coverage adjustment mechanism to adjust the coverage range of the upper part of the electrolyte collection cover in real time, so that it can completely cover the detection surface of the battery box, preventing electrolyte leakage. It can collect electrolyte leaking from the rupture area in an all-round way in the first instance, effectively blocking electrolyte leakage, reducing safety hazards, and preventing electrolyte corrosion of the device. Moreover, it can achieve full coverage of the rupture without manual adjustment of the position of the electrolyte collection cover, shortening the detection time. Furthermore, the enlarged electrolyte collection cover can be reused, eliminating the need for frequent replacement and reducing maintenance costs.
[0016] This invention provides effective limiting and support for the four sides and top of the car battery box through the fixing components, preventing displacement of the battery box during the pressure test and affecting the test results. In addition, with the cooperation of the fixing components, the position of the test surface at the bottom of the battery box can be adjusted in real time according to the test progress, so as to realize the pressure test on different test surfaces at the bottom of the car battery box. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure for detecting the status of an automotive battery box according to the present invention; Figure 2 This is a schematic diagram of the overall structure of the present invention; Figure 3 This is a cross-sectional view of the internal structure of the testing station of the present invention; Figure 4 This is a three-dimensional structural diagram of the pressure resistance detection component and the electrolyte collection cover of the present invention; Figure 5 This is a cross-sectional view of the internal structure of the mounting bracket of the present invention; Figure 6 This is a front sectional view of the electrolyte collection cover and pressure testing component of the present invention; Figure 7 This is a three-dimensional structural diagram of the coverage adjustment mechanism and the electrolyte collection cover of the present invention; Figure 8 This is an exploded view of the coverage adjustment mechanism of the present invention; Figure 9 This is a three-dimensional structural diagram of the automotive battery box of the present invention when it is in a fixed state. Figure 10 This is a partial structural diagram of the fixing component of the present invention.
[0018] In the diagram: 2. Testing platform; 21. Testing port; 22. Cavity; 3. Pressure testing assembly; 31. First electric push rod; 32. Testing pressure head; 4. Mounting bracket; 5. Electrolyte collection cover; 6. Flow channel; 7. Coverage adjustment mechanism; 71. Drive ring; 72. Arc-shaped drive groove; 73. Control ring; 74. First sliding block; 75. Second electric push rod; 8. Fixing assembly; 81. Third electric push rod; 82. Fourth electric push rod; 83. Second sliding block; 84. First fixing block; 85. Third sliding block; 86. Second fixing block; 87. First fixing groove; 88. Second fixing groove. Detailed Implementation
[0019] The embodiments of the present invention are described in detail below. These embodiments are implemented based on the technical solution of the present invention, and provide detailed implementation methods and specific operation processes. However, the scope of protection of the present invention is not limited to the following embodiments. In the description of the present invention, words such as "front", "rear", "left", and "right" that indicate orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.
[0020] A pressure testing device for battery boxes in new energy vehicles, such as Figures 1-10 As shown, the device includes a testing platform 2 for supporting the car battery box and a testing port 21 extending through the top of the testing platform 2. The testing platform 2 has a cavity 22 inside, and the top of the cavity 22 communicates with the testing port 21. Inside the cavity 22 is a pressure testing assembly 3 for performing pressure testing on the bottom of the car battery box. A mounting bracket 4 is provided on the outside of the pressure testing assembly 3. A conical electrolyte collection cover 5 is provided on the inside of the mounting bracket 4 to cover the testing surface of the car battery box. The top of the electrolyte collection cover 5 is open and allows for electrolysis. The top of the electrolyte collection cover 5 is flush with the top of the detection port 21. The detection end of the pressure testing component 3 passes through the bottom of the electrolyte collection cover 5 and is located inside the electrolyte collection cover 5. The lower part of the electrolyte collection cover 5 is connected to a guide channel 6 that can guide the electrolyte inside the electrolyte collection cover 5 to the outside of the testing platform 2. The outer side of the electrolyte collection cover 5 is provided with a coverage adjustment mechanism 7 that can adjust the upper diameter of the electrolyte collection cover 5. The top of the testing platform 2 is provided with a fixing component 8 that can clamp and fix the car battery box.
[0021] Furthermore, in this embodiment, the pressure resistance detection component 3 includes a first electric push rod 31 vertically disposed inside the cavity 22. The output end of the first electric push rod 31 passes through the bottom of the electrolyte collection cover 5 and slides vertically with the electrolyte collection cover 5. The output end of the first electric push rod 31 is provided with a detection pressure head 32 that can apply pressure to the bottom of the car battery box for pressure resistance detection.
[0022] like Figures 1 to 6 As shown, in this embodiment, when performing a pressure test on the car battery box, the car battery box is first placed on top of the testing platform 2 and fixed to the outside of the car battery box by the fixing component 8. The bottom surface of the car battery box to be tested is exposed at the testing port 21 and corresponds to the position of the testing head 32. The first electric push rod 31 is controlled by an external controller to work, driving the testing head 32 to rise and stop at the bottom testing surface of the car battery box. The first electric push rod 31 drives the testing head 32 to rise slowly to gradually increase the pressure on the testing surface. By observing the deformation of the testing surface, the pressure test of the car battery box is achieved. During the testing process, since the top surface of the electrolyte collection cover 5 is in contact with the bottom of the car battery box, the electrolyte collection cover 5 covers the testing surface. When the testing surface of the battery box breaks during the testing process, since this device uses a bottom-up pressure test method to apply pressure to the bottom of the car battery box, the electrolyte leaking out of the broken battery box will flow downwards and be collected by the electrolyte collection cover 5 covering the testing surface in the first time.
[0023] Furthermore, such as Figure 5 and Figure 6 As shown, in this embodiment, a folded sealing cloth is provided at the sliding connection between the first electric push rod 31 and the bottom of the electrolyte collection cover 5 to seal the sliding joint between the first electric push rod 31 and the electrolyte collection cover 5. The output end surface of the first electric push rod 31 and the surface of the detection pressure head 32 are both coated with an anti-corrosion coating. By providing a folded sealing cloth for sealing at the sliding connection between the output end of the first electric push rod 31 and the electrolyte collection cover 5, the electrolyte inside the electrolyte collection cover 5 can be effectively prevented from leaking out from the joint between the output end of the first electric push rod 31 and the electrolyte collection cover 5.
[0024] Furthermore, such as Figures 3 to 6 As shown, in this embodiment, the bottom of the electrolyte collection hood 5 is inclined, the flow channel 6 is inclined, the end of the flow channel 6 near the electrolyte collection hood 5 is higher than the end of the flow channel 6 away from the electrolyte collection hood 5, and the higher end of the flow channel 6 is connected to the lower end of the bottom of the electrolyte collection hood 5. The lower end of the flow channel 6 passes through the mounting frame 4 and the side of the detection table 2 and is located outside the detection table 2. Electrolyte flowing into the electrolyte collection hood 5 from the crack in the battery box inspection surface gathers at the bottom of the electrolyte collection hood 5. Because the bottom of the inner side of the electrolyte collection hood 5 is sloped, the electrolyte will flow to the lower end, which is connected to the guide channel 6, and gradually flow into the guide channel 6. By using the external receiving and collecting device at the end of the guide channel 6 located outside the inspection platform 2, the electrolyte inside the electrolyte collection hood 5 can be guided to the collection device outside the inspection platform 2 for collection. This can reduce the cleaning frequency inside the electrolyte collection hood 5 and can collect the electrolyte leaking from the cracked battery box in a timely manner, which can be reused after subsequent processing.
[0025] Furthermore, such as Figure 7 and Figure 8 As shown, in this embodiment, the upper part of the electrolyte collection cover 5 is made of elastic silicone material, the lower part of the electrolyte collection cover 5 is made of engineering plastic material, and the inner wall of the electrolyte collection cover 5 is coated with an anti-corrosion coating. Furthermore, the coverage adjustment mechanism 7 includes a drive ring 71 rotatably mounted on the top of the mounting frame 4. The outer side of the drive ring 71 is circular and evenly distributed with several arc-shaped drive grooves 72. A control ring 73 is provided directly above the drive plate. The top of the control ring 73 is connected to the inner top of the detection table 2. The bottom of the control ring 73 is provided with several sliding grooves that correspond one-to-one with the positions of the arc-shaped drive grooves 72. A first sliding block 74 is slidably connected to each sliding groove. Furthermore, the bottom of each first sliding block 74 is slidably connected to an arc-shaped drive groove 72, and the side end of each first sliding block 74 is connected to the side end of the upper part of the electrolyte collection cover 5. The inner top of the detection table 2 is horizontally provided with a second electric push rod 75, the tail end of the second electric push rod 75 is connected to the inner wall of the detection table 2, and the output end of the second electric push rod 75 is connected to one side of the drive disk. Furthermore, it also includes a control system located inside the electrolyte collection hood 5. The control system includes a controller, a pressure sensor, a camera, and a drive control module. The pressure sensor is located on one side of the detection end of the detection head 32. The controller, drive control module, and camera are located inside the electrolyte collection hood 5. The pressure sensor and drive control module are electrically connected to the controller, and the camera is communicatively connected to the controller. During the pressure test, the pressure sensor monitors the pressure data in real time and transmits it to the controller. The camera captures the image information of the battery box detection surface in real time and transmits it to the controller. When the car battery box is ruptured under pressure, the pressure value monitored by the pressure sensor drops sharply. The controller judges that the car battery box has ruptured through the pressure change signal. At the same time, through the image recognition processing of the camera, the rupture location and rupture range of the bottom detection surface of the car battery box are determined in the first time. The controller outputs control commands to the drive control module according to the pressure change signal and rupture range information. The drive control module controls the coverage adjustment mechanism 7 to work and adaptively adjust the coverage surface of the electrolyte collection cover 5. The specific adjustment process is as follows: The controller extends the output end of the second electric push rod 75 through the drive control module, causing the drive ring 71 to rotate clockwise by a certain angle. Under the sliding cooperation of several arc-shaped drive grooves 72 and the first sliding block 74, several first sliding blocks 74 are driven to slide synchronously away from the axis of the drive ring 71, thereby stretching the upper part of the electrolyte collection cover 5 and expanding the coverage diameter of the top of the electrolyte collection cover 5. The controller adjusts the extension amount of the second electric push rod 75 according to the real-time identified rupture range until the upper part of the electrolyte collection cover 5 completely covers the rupture area of the bottom detection surface of the car battery box, thereby collecting the electrolyte leaking from the rupture area in all directions as soon as possible, effectively preventing electrolyte leakage, reducing safety hazards, and preventing electrolyte corrosion of the device. The entire adjustment process does not require manual adjustment of the position of the electrolyte collection cover 5, which can achieve adaptive full coverage of the rupture opening, shorten the detection auxiliary time, reduce maintenance costs, and the enlarged electrolyte collection cover 5 can be reused without frequent replacement, further reducing detection costs. The electrolyte collection cover 5 can be adjusted to accommodate different sizes of automotive battery boxes, thus improving its applicability.
[0026] Furthermore, such as Figure 9 and Figure 10 As shown, in this embodiment, the fixing component 8 includes two third electric push rods 81 that are symmetrically and horizontally arranged on both sides of the detection port 21, and two fourth electric push rods 82 that are symmetrically and horizontally arranged on the other two sides of the detection port 21. The output ends of the two third electric push rods 81 are provided with second sliding blocks 83, and a first fixing block 84 is slidably connected to the second sliding block 83 in the horizontal direction. The output ends of the two fourth electric push rods 82 are provided with third sliding blocks 85, and a second fixing block 86 is slidably connected to the third sliding block 85 in the horizontal direction. Furthermore, each of the two first fixing blocks 84 has a first fixing groove 87 on one side adjacent to each other, which can limit the upper part and top surface of the car battery box and fits the shape. Each of the two second fixing blocks 86 has a second fixing groove 88 on one side adjacent to each other, which can limit the middle and both sides of the car battery box and fits the shape. Before the pressure test, the car battery box is placed on top of the test platform 2. The two third electric push rods 81 and two fourth electric push rods 82 are controlled to work, which drive the two first fixing blocks 84 to clamp and fix the two sides of the upper part of the car battery box respectively, and drive the two second fixing blocks 86 to clamp and fix the other two sides of the middle part of the car battery box respectively. This clamps and limits the four sides of the car battery box, ensuring that the car battery box is in a stable state during the pressure test and avoiding displacement.
[0027] During operation, the electrolyte collection cover 5 covers the outer side of the detection surface at the bottom of the car battery box. Since this invention uses a bottom-up pressure application method to perform pressure testing on the bottom of the car battery box, if the detection surface of the car battery box cracks during the test, the leaking electrolyte will flow downwards and be collected immediately by the electrolyte collection cover 5 covering the detection surface. The coverage adjustment mechanism 7 is controlled by the drive control module to adjust the coverage area of the upper part of the electrolyte collection cover 5 in real time, ensuring that it completely covers the car battery box. To prevent electrolyte leakage, the bottom inner side of the electrolyte collection hood 5 is sloped, allowing the electrolyte to flow towards the lower end, which connects to the guide channel 6, and gradually enter the guide channel 6. By using an external collection device at the end of the guide channel 6 located outside the detection platform 2, the electrolyte inside the electrolyte collection hood 5 can be effectively guided to the collection device outside the detection platform 2 for collection. This reduces the frequency of cleaning the inside of the electrolyte collection hood 5 and allows for timely collection of electrolyte leaking from a ruptured battery box, which can then be reused after further processing.
[0028] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. A pressure resistance testing device for a new energy vehicle battery box, characterized in that, It includes a test platform (2) for supporting the car battery box and a test port (21) that passes through the top of the test platform (2). The test platform (2) has a cavity (22) inside, and the top of the cavity (22) is connected to the test port (21). The cavity (22) is equipped with a pressure testing component (3) for pressure testing of the bottom of the car battery box. The pressure testing component (3) is provided with a mounting bracket (4) on the outside and a conical electrolyte collection cover (5) covering the testing surface of the car battery box on the inside of the mounting bracket (4). The top of the electrolyte collection cover (5) is open and the top of the electrolyte collection cover (5) is flush with the top of the testing port (21). The testing end of the pressure testing component (3) passes through the bottom of the electrolyte collection cover (5) and is located inside the electrolyte collection cover (5). The lower part of the electrolyte collection hood (5) is connected to a guide channel (6) that can guide the electrolyte inside the electrolyte collection hood (5) to the outside of the detection station (2). The outer side of the electrolyte collection cover (5) is provided with a coverage adjustment mechanism (7) that can adjust the upper diameter of the electrolyte collection cover (5). The top of the testing station (2) is provided with a fixing component (8) that can clamp and fix the car battery box.
2. The pressure resistance testing device for a new energy vehicle battery box as described in claim 1, characterized in that, The pressure resistance testing component (3) includes a first electric push rod (31) vertically disposed inside the cavity (22). The output end of the first electric push rod (31) passes through the bottom of the electrolyte collection cover (5) and slides up and down with the electrolyte collection cover (5). The output end of the first electric push rod (31) is provided with a testing head (32) that can apply pressure to the bottom of the car battery box for pressure resistance testing.
3. The pressure resistance testing device for a new energy vehicle battery box as described in claim 2, characterized in that, The sliding connection between the first electric push rod (31) and the bottom of the electrolyte collection cover (5) is provided with a folded sealing cloth that can seal the sliding joint between the first electric push rod (31) and the electrolyte collection cover (5). The output end surface of the first electric push rod (31) and the surface of the detection pressure head (32) are both coated with an anti-corrosion coating.
4. The pressure resistance testing device for a new energy vehicle battery box as described in claim 3, characterized in that, The bottom of the electrolyte collection hood (5) is inclined, and the flow channel (6) is inclined. The end of the flow channel (6) near the electrolyte collection hood (5) is higher than the end of the flow channel (6) away from the electrolyte collection hood (5). The higher end of the flow channel (6) is connected to the lower end of the bottom of the electrolyte collection hood (5). The lower end of the flow channel (6) passes through the mounting frame (4) and the side of the detection table (2) and is located outside the detection table (2).
5. The pressure resistance testing device for a new energy vehicle battery box as described in claim 4, characterized in that, The upper part of the electrolyte collection cover (5) is made of elastic silicone material, the lower part of the electrolyte collection cover (5) is made of engineering plastic material, and the inner wall of the electrolyte collection cover (5) is coated with an anti-corrosion coating.
6. The pressure resistance testing device for a new energy vehicle battery box as described in claim 5, characterized in that, The coverage adjustment mechanism (7) includes a drive ring (71) rotatably mounted on the top of the mounting frame (4). The outer side of the drive ring (71) is circular and has several arc-shaped drive grooves (72) evenly distributed. A control ring (73) is located directly above the drive plate. The top of the control ring (73) is connected to the inner top of the detection table (2). The bottom of the control ring (73) has several sliding grooves that correspond one-to-one with the positions of the arc-shaped drive grooves (72). A first sliding block (74) is slidably connected to each sliding groove.
7. The pressure resistance testing device for a new energy vehicle battery box as described in claim 6, characterized in that, The bottom of each of the first sliding blocks (74) is slidably connected to an arc-shaped drive groove (72), and the side end of each of the first sliding blocks (74) is connected to the side end of the upper part of the electrolyte collection cover (5). The inner top of the detection platform (2) is horizontally provided with a second electric push rod (75), the tail end of the second electric push rod (75) is connected to the inner wall of the detection platform (2), and the output end of the second electric push rod (75) is connected to one side of the drive disk.
8. The pressure resistance testing device for a new energy vehicle battery box as described in claim 7, characterized in that, It also includes a control system located inside the electrolyte collection hood (5). The control system includes a controller, a pressure sensor, a camera, and a drive control module. The pressure sensor is located on one side of the detection end of the detection head (32). The controller, drive control module, and camera are located inside the electrolyte collection hood (5). The pressure sensor and drive control module are electrically connected to the controller, and the camera is communicatively connected to the controller.
9. The pressure resistance testing device for a new energy vehicle battery box as described in claim 8, characterized in that, The fixing component (8) includes two third electric push rods (81) symmetrically and horizontally arranged on both sides of the detection port (21), and two fourth electric push rods (82) symmetrically and horizontally arranged on the other two sides of the detection port (21). The output ends of the two third electric push rods (81) are provided with second sliding blocks (83), and a first fixing block (84) is slidably connected to the second sliding block (83) in the horizontal direction. The output ends of the two fourth electric push rods (82) are provided with third sliding blocks (85), and a second fixing block (86) is slidably connected to the third sliding block (85) in the horizontal direction.
10. The pressure resistance testing device for a new energy vehicle battery box as described in claim 9, characterized in that, The two first fixing blocks (84) are provided with a first fixing groove (87) on one side of each adjacent side, which can limit the upper part and top surface of the car battery box and fit the shape. The two second fixing blocks (86) are provided with a second fixing groove (88) on one side of each adjacent side, which can limit the middle and sides of the car battery box and fit the shape.